The more I read that the more I believe that the surge was engineered to provide as they say themselves 'truly sporting experience all of the time', no other reason.

Maybe it was engineered to be 'truly sporting' but you have to agree that there is a benefit, even if small, in making use of the rotational energy between gears so that a performance and an efficiency benefit will be realized -- one that can presumably be measured (with proper gear) as well as felt.